Microwave oven started running on its own (by 4 users)

Yes, my Samsung Microwave randomly starts itself and will keep running hot if I don't stop it. I have to unplug it.

I was sitting in my kitchen and my microwave came on automatically and would not shut off I eventually had to open up the door to make it stop. I tried to unplug it to with hopes of resetting it, but that don't work either. What do you recommend that I do to solve the matter?

my samsung microwave did some thing similar this evening. After cooking a burrito for 1 minuite it would not turn off. Although the motor was not as strong the light would not turn off and the motor hummed. I am thinking possible turntable. I unplugged it and turned off the circuit breakers hoping to treset it but no luck.